EV Battery Lock Release via External Controller Backup
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Solution Overview
Problem
Existing battery exchange systems for electric vehicles face difficulties in attaching or detaching batteries when the on-board controller is in a non-operating state, such as during vehicle failures or accidents, due to the lock mechanism being inoperable.
Innovation Solution
A battery exchange system that includes a lock mechanism fixed to the vehicle frame, an on-board actuator driven by a hydraulic system, an on-board circuit network, and an on-board controller, with an external controller capable of operating the actuator via a connector when the on-board controller is non-operational.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lock mechanism is firmly fixed to the vehicle frame for safety reasons, then the reliability of battery fixation is improved, but the ease of operation for battery attachment/detachment deteriorates when the on-board controller is non-operational
Solution Approach 1:
The patent introduces an external controller as an intermediary device that can communicate with the on-board controller through a dedicated communication interface. When the on-board controller is non-operational, the external controller takes over to activate the lock mechanism, enabling battery attachment/detachment operations without requiring disassembly of the lock mechanism or vehicle body.
Solution Approach 2:
The system enables self-service battery exchange by allowing the external controller to directly control the lock mechanism through the communication interface. This eliminates the need for professional intervention or complex disassembly procedures, allowing users to perform battery attachment/detachment operations independently even when the on-board controller fails.
2Reliability
If the on-board controller is set to non-operating state for safety reasons outside battery exchange stations, then the safety of the system is improved, but the adaptability for emergency battery exchange deteriorates
Solution Approach 1:
The patent makes the lock mechanism controllable by multiple controllers - both the on-board controller under normal conditions and the external controller under emergency conditions. This multi-functionality allows the system to adapt to different operational scenarios, including battery exchange at designated stations, emergency exchanges on the road, and situations where the on-board controller fails.
Solution Approach 2:
The system prepares for emergency situations by establishing a communication interface between the external controller and the on-board controller before any failure occurs. This preliminary setup ensures that when the on-board controller becomes non-operational, the external controller can immediately take over without requiring any additional configuration or disassembly procedures.
3Measurement precision
If communication with the station system is required for battery exchange, then the measurement precision of battery information transmission is improved, but the loss of time for battery exchange increases when the on-board controller is non-operational
Solution Approach 1:
The patent extracts the communication function from the on-board controller and makes it accessible through the external controller via the dedicated communication interface. This allows battery information transmission to continue even when the on-board controller is non-operational, eliminating the need to wait for controller repair or replacement while maintaining accurate information exchange with the station system.
Data Source
AI summary
Battery 11 exchange system 1 for electric vehicle C according to the present disclosure includes: lock mechanism 13 configured to attach battery 11 to vehicle frame Cf; on-board actuator 14 configured to drive lock mechanism 13 to switch between a locked state and an unlocked state of battery 11 with respect to vehicle frame Cf; on-board circuit network 20 configured to operate on-board actuator 14; on-board controller 100 configured to control an operation of on-board actuator 14 via on-board circuit network 20; and on-board connector 21, one end of which is connected to on-board circuit network 20 and the other end of which is connectable to external controller 200. When on-board controller 100 is in a non-operating state, the operation of on-board actuator 14 is controllable by external controller 200 via on-board circuit network 20.